<?php

/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Service
 * @subpackage Simpy
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: WatchlistSet.php 16211 2009-06-21 19:23:55Z thomas $
 */


/**
 * @see Zend_Service_Simpy_Watchlist
 */
require_once 'Zend/Service/Simpy/Watchlist.php';


/**
 * @category   Zend
 * @package    Zend_Service
 * @subpackage Simpy
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Service_Simpy_WatchlistSet implements IteratorAggregate
{
	/**
	 * List of watchlists
	 *
	 * @var array of Zend_Service_Simpy_Watchlist objects
	 */
	protected $_watchlists = array();

	/**
	 * Constructor to initialize the object with data
	 *
	 * @param  DOMDocument $doc Parsed response from a GetWatchlists operation
	 * @return void
	 */
	public function __construct(DOMDocument $doc)
	{
		$xpath = new DOMXPath($doc);
		$list = $xpath->query('//watchlists/watchlist');

		for ($x = 0; $x < $list->length; $x++) {
			$this->_watchlists[$x] = new Zend_Service_Simpy_Watchlist($list->item($x));
		}
	}

	/**
	 * Returns an iterator for the watchlist set
	 *
	 * @return ArrayIterator
	 */
	public function getIterator()
	{
		return new ArrayIterator($this->_watchlists);
	}

	/**
	 * Returns the number of watchlists in the set
	 *
	 * @return int
	 */
	public function getLength()
	{
		return count($this->_watchlists);
	}
}
